Engine Oil Recommendation - Porsche 911 GT3 Owner's Manual

Engine Oil Recommendation

Recommended oil viscosity ranges dependent on ambient temperatures
Ambient temperature SAE Viscosity Range
seasonal engine oils
generally up to -13°Fj-25°C OW-40
5W-40
5W-50
generally up to -22°FnO°C OW-40
Use only engine oils approved by Porsche.
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If in doubt ask your authorized Porsche dealer for Porsche tested and approved all-season oils.
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Maintenance, Car Care